980521 has 4 divisors (see below), whose sum is σ = 997200. Its totient is φ = 963844.

The previous prime is 980503. The next prime is 980549. The reversal of 980521 is 125089.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 125089 = 67 ⋅1867.

It is a cyclic number.

It is not a de Polignac number, because 980521 - 2⁵ = 980489 is a prime.

It is a super-2 number, since 2×980521² = 1922842862882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (980591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8251 + ... + 8368.

It is an arithmetic number, because the mean of its divisors is an integer number (249300).

2⁹⁸⁰⁵²¹ is an apocalyptic number.

It is an amenable number.

980521 is a deficient number, since it is larger than the sum of its proper divisors (16679).

980521 is a wasteful number, since it uses less digits than its factorization.

980521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16678.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 980521 is about 990.2126034342. The cubic root of 980521 is about 99.3464378709.

The spelling of 980521 in words is "nine hundred eighty thousand, five hundred twenty-one".